public class Test {
    public static void main(String[] args) {
        int a=1;
        System.out.println(a+=2);//a=a+2
        System.out.println(a-=2);//a=a-2
        System.out.println(a*=2);//a=a*2
        System.out.println(a/=2);//a=a/2
    }
}
